If dT/dL denotes temperature gradient with respect to thickness L at the surface A, k denotes the thermal conductivity, then the heat transferred per unit area is given by __________

If dT/dL denotes temperature gradient with respect to thickness L at

1.	If dT/dL denotes temperature gradient with respect to thickness L at the surface A, k denotes the thermal conductivity, then the heat transferred per unit area is given by __________
A.	Q/A = -k dT/dL
B.	Q/A = -(1/k) dT/dL
C.	Q/A = k dT/dL
D.	Q/A = (1/k) kdT/dL
Answer» B. Q/A = -(1/k) dT/dL

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If dT/dL denotes temperature gradient with respect to thickness L at the surface A, k denotes the thermal conductivity, then the heat transferred per unit area is given by __________

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